396
FNCA52 TJSJ 291930
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 PM AST TUE SEP 29 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-300800-
SOUTHEAST COASTAL PLAINS-
330 PM AST TUE SEP 29 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 20 20
TEMP (24H TREND) 73 (-3) 89 (+1) 73 89
RH % (24H TREND) 93 (+3) 52 (-8) 94 52
WIND 20FT/EARLY(MPH) NE 13 E 16 E 13 E 16
WIND 20FT/LATE(MPH) NE 10 E 18 NE 11 E 16
MIXING HGT(FT-AGL/MSL) 6000 4990
TRANSPORT WND (MPH) E 18 E 16
VENT RATE (KT-FT) 96000 69860
DISPERSION 5 5
DSI 3 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ015-300800-
SOUTHERN HILLS-
330 PM AST TUE SEP 29 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 10 40 20 40
TEMP (24H TREND) 69 (-5) 87 (+3) 69 87
RH % (24H TREND) 99 (+5) 63 (-8) 100 63
WIND 20FT/EARLY(MPH) NE 12 E 13 NE 12 E 12
WIND 20FT/LATE(MPH) NE 12 E 14 NE 12 E 12
MIXING HGT(FT-AGL/MSL) 6510 5840
TRANSPORT WND (MPH) E 16 E 15
VENT RATE (KT-FT) 91140 75920
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ016-300800-
NORTH COASTAL PLAINS-
330 PM AST TUE SEP 29 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 40 40 20 50
TEMP (24H TREND) 73 (-3) 88 (+1) 73 90
RH % (24H TREND) 100 (+5) 65 (-8) 100 64
WIND 20FT/EARLY(MPH) E 17 E 14 E 18 E 13
WIND 20FT/LATE(MPH) E 13 E 18 E 12 E 18
MIXING HGT(FT-AGL/MSL) 5450 5480
TRANSPORT WND (MPH) E 18 E 16
VENT RATE (KT-FT) 87200 76720
DISPERSION 5 5
DSI 6 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ017-300800-
NORTHERN HILLS-
330 PM AST TUE SEP 29 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 30 50 10 60
TEMP (24H TREND) 71 (-3) 87 (+1) 70 88
RH % (24H TREND) 100 (+3) 67 (-6) 100 66
WIND 20FT/EARLY(MPH) E 14 E 13 E 16 E 11
WIND 20FT/LATE(MPH) E 11 NE 17 E 10 E 14
MIXING HGT(FT-AGL/MSL) 6120 5890
TRANSPORT WND (MPH) E 16 E 13
VENT RATE (KT-FT) 85680 64790
DISPERSION 5 5
DSI 4 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ018-300800-
WEST COAST-
330 PM AST TUE SEP 29 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS TSTMS NONE TSTMS
CHANCE PRECIP (%) 20 60 0 60
TEMP (24H TREND) 71 (-3) 90 (+1) 72 90
RH % (24H TREND) 100 (+2) 66 (-5) 100 65
WIND 20FT/EARLY(MPH) E 18 E 12 E 17 E 12
WIND 20FT/LATE(MPH) E 16 E 13 E 13 E 13
MIXING HGT(FT-AGL/MSL) 5570 5040
TRANSPORT WND (MPH) E 10 E 10
VENT RATE (KT-FT) 50130 45360
DISPERSION 5 5
DSI 3 6 4 5
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ019-300800-
EASTERN INTERIOR-
330 PM AST TUE SEP 29 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 30 40 40 40
TEMP (24H TREND) 71 (-4) 87 (+2) 71 88
RH % (24H TREND) 99 (+3) 64 (-6) 100 64
WIND 20FT/EARLY(MPH) E 13 E 13 E 12 E 13
WIND 20FT/LATE(MPH) E 12 E 13 E 12 E 12
MIXING HGT(FT-AGL/MSL) 6420 6260
TRANSPORT WND (MPH) E 17 E 15
VENT RATE (KT-FT) 96300 81380
DISPERSION 5 5
DSI 3 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ022-300800-
LUQUILLO MOUNTAIN RANGE-
330 PM AST TUE SEP 29 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 30 40 40 50
TEMP (24H TREND) 70 (-4) 83 (+3) 68 84
RH % (24H TREND) 99 (+2) 67 (-9) 100 67
WIND 20FT/EARLY(MPH) E 11 E 12 E 10 E 11
WIND 20FT/LATE(MPH) E 9 E 12 E 9 E 11
MIXING HGT(FT-AGL/MSL) 5090 4220
TRANSPORT WND (MPH) E 18 E 16
VENT RATE (KT-FT) 81440 59080
DISPERSION 5 5
DSI 5 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ023-300800-
CENTRAL MOUNTAIN RANGE-
330 PM AST TUE SEP 29 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 10 60 0 70
TEMP (24H TREND) 68 (-3) 85 (+4) 67 86
RH % (24H TREND) 99 (+3) 68 (-8) 100 68
WIND 20FT/EARLY(MPH) E 13 E 9 E 12 E 9
WIND 20FT/LATE(MPH) E 11 E 12 E 9 E 9
MIXING HGT(FT-AGL/MSL) 7420 6480
TRANSPORT WND (MPH) E 13 E 12
VENT RATE (KT-FT) 81620 64800
DISPERSION 5 5
DSI 2 6 2 5
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ024-300800-
CAYEY MOUNTAIN RANGE-
330 PM AST TUE SEP 29 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 40 40 40
TEMP (24H TREND) 69 (-4) 84 (+2) 68 84
RH % (24H TREND) 100 (+2) 67 (-6) 100 68
WIND 20FT/EARLY(MPH) NE 10 E 12 E 10 E 10
WIND 20FT/LATE(MPH) NE 10 E 13 E 10 E 10
MIXING HGT(FT-AGL/MSL) 5820 4890
TRANSPORT WND (MPH) E 18 E 15
VENT RATE (KT-FT) 93120 63570
DISPERSION 5 5
DSI 3 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ025-300800-
VIEQUES-
330 PM AST TUE SEP 29 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 40 40
TEMP (24H TREND) 77 (-1) 86 (0) 74 87
RH % (24H TREND) 90 (+1) 64 (-6) 98 63
WIND 20FT/EARLY(MPH) E 16 E 17 E 18 E 14
WIND 20FT/LATE(MPH) E 17 E 17 E 17 E 14
MIXING HGT(FT-AGL/MSL) 3970 3590
TRANSPORT WND (MPH) E 21 E 18
VENT RATE (KT-FT) 71460 57440
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ026-300800-
CULEBRA-
330 PM AST TUE SEP 29 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 40 40
TEMP (24H TREND) 79 (-1) 88 (+1) 77 90
RH % (24H TREND) 89 (+1) 64 (-7) 96 63
WIND 20FT/EARLY(MPH) E 16 E 17 E 18 E 14
WIND 20FT/LATE(MPH) E 16 E 17 E 17 E 14
MIXING HGT(FT-AGL/MSL) 3700 3760
TRANSPORT WND (MPH) E 20 E 20
VENT RATE (KT-FT) 62900 63920
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ027-300800-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 PM AST TUE SEP 29 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 40 10 20
TEMP (24H TREND) 73 (-3) 89 (+1) 73 91
RH % (24H TREND) 95 (+4) 52 (-6) 92 54
WIND 20FT/EARLY(MPH) E 13 E 17 E 16 E 18
WIND 20FT/LATE(MPH) E 11 E 19 E 11 E 19
MIXING HGT(FT-AGL/MSL) 5850 5250
TRANSPORT WND (MPH) E 16 E 17
VENT RATE (KT-FT) 81900 78750
DISPERSION 5 5
DSI 3 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ001-300800-
SAINT THOMAS AND SAINT JOHN-
330 PM AST TUE SEP 29 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 30 30 20
TEMP (24H TREND) 77 (-2) 86 (0) 76 86
RH % (24H TREND) 90 (+1) 67 (-5) 95 67
WIND 20FT/EARLY(MPH) E 17 E 16 E 17 E 16
WIND 20FT/LATE(MPH) E 17 E 16 E 17 E 14
MIXING HGT(FT-AGL/MSL) 3650 3660
TRANSPORT WND (MPH) E 21 E 20
VENT RATE (KT-FT) 65700 62220
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ002-300800-
ST CROIX-
330 PM AST TUE SEP 29 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 40 40
TEMP (24H TREND) 77 (-1) 86 (0) 73 88
RH % (24H TREND) 94 (+1) 67 (-5) 100 68
WIND 20FT/EARLY(MPH) E 16 E 17 E 17 E 14
WIND 20FT/LATE(MPH) E 16 E 17 E 17 E 14
MIXING HGT(FT-AGL/MSL) 5290 4540
TRANSPORT WND (MPH) E 23 E 20
VENT RATE (KT-FT) 105800 77180
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
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